What Is the MAIN Reason for Using Several Radio Telescopes

question 396

Multiple Choice

What is the MAIN reason for using several radio telescopes together as an interferometer?

• A) to obtain much better angular resolution or sharpness in the images
• B) to ensure that at least one of the telescopes is in a radio-interference-free zone
• C) to collect more radiation from very faint sources
• D) to ensure that observations are uninterrupted by the failure of one or two telescopes

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